Plainfield police are investigating two shootings that left three men injured.Star-Ledger file photo

PLAINFIELD — Two shootings hours apart Wednesday sent three men to area hospitals with injuries that aren't believed to be life-threatening, police said.

Police said in a statement Thursday that it is unknown whether the shootings were related.

In the first incident, police responding to reported gunfire in the 600 block of West 4th Street around 5:24 p.m. found a 36-year-old city resident with a gunshot wound to his hand, according to the statement.

A passerby took the victim to the JFK Medical Center Muhlenberg campus emergency department, where he was treated and released, police said.

Police said a preliminary investigation by detectives indicates this was not a random shooting.

Around 9:50 p.m., police were alerted to another incident of gunshots, this time in the area of Garfield Avenue and East 2nd Street.

The responding officers found two men with gunshot wounds, both of whom are currently in stable condition at Robert Wood Johnson University Hospital, according to police.

No additional information will be released at this time, authorities said.

Anyone with information on either shooting is asked to contact Det. Leslie Hudson at (908) 753-3958 or Det. Thomas Collina at (908) 753-3621.

Katie Lannan may be reached at klannan@njadvancemedia.com. Follow her on Twitter @katielannan. Find NJ.com on Facebook. Stay up-to-the-minute with the latest Union County news by bookmarking nj.com/union.